Half to b



m3. 623,890. Patented Apr. 25, I899.

' J. H. DICKERSUN.

SASH LIFT.

(Application filed Mar. 20, 1897.).

(No Model c m m w a m m A w u H n M r o H w s R m p m a n a N z N 1UNITED STATES PATENT @rrrca.

JAMES HOWVARD DICKERSON, OF DANVILLE, VIRGINIA, ASSIGNOR OF ONE-' HALFTO B. S. MOTLEY, OF SAME PLACE.

SASH-LIFT.

SPECIFICATION forming part of Letters Patent N 0. 623,890, dated April25, 1899.

Application filed March 201 1897. berial No. 628,494. llo model.)

T at whom it I'll/00y concern: with its axis extending transverselythrough Be it known that I, JAMES HOWARD DICK- the frame. ERsON, acitizen of the United States, residg represents a crank-handle on thewinding at Danville, in the county of Pittsylvania lass. Thiscrank-handle is located on the and State of Virginia, have inventedcertain outside of the window-frame within thchouse, 55 new and usefulImprovements in Sash-Lifts; so that the sash can be raised and loweredand I do declare the following to be a full, without putting ones handoutdoors and exclear, and exact description of the invention, posing itto the weather. such as will enable others skilled in the art hrepresents an endless cable which is given IO to which it appertains tomake and use the several winds or coils around the drum, 60 same,reference being had to the accompanywhence it passes up around thepulley 2', susing drawings, and to the letters of reference pended fromthe top wall of the chamber d. marked thereon, which form a part of thisj represents a counterbalancing-weight specification. which is attachedto the endless cable to move My invention relates to those sash-liftsoperup and down between the pulley and Windlass. 65 ated byapulley-and-weight mechanism from The sash b is connected to the weightby a the side of the window-frame. cord 70, which passes over the pulleyZ in the The object of myinvention is to produce a frame CL. Theopposite or left-hand side of more simple, cheap, and durable mechanismthe sash Z) is provided with the usual counwhich can be more easilyoperated, more positerbalancing-weight m, pulley n, and cord 0. 7o tivein action, and which will avoid the use of The lower sash cis raised andlowered through pawl-and-ratchet or other fastening devices the mediumof a Windlass mechanism operfor retaining the sash at the variousheights ated by an externally-projecting crank-handesired. dle g, all ofwhich is arranged exactly like To this end my invention consists in thepethe mechanism just described on the rightculiar features andcombinations of parts hand side of the frame. The right side of morefullydescribed hereinafter and pointed the lower sash c is provided witha counterout in the claim. balancing-weight m, which moves up and In theaccompanying drawings, Figure 1 down with the rise and fall of the sashin the represents the front elevation of my complete right-hand chambercl and alongside of the 80 device as applied to an ordinary windowhavcounterbalancing-weight j. This weight is ing upper and lower sashes,the frame being made heavier than the weight m on the opcut away todisclose the parts within; and posite side of sash b in order tofacilitate the Fig. 2, an edge view of the window-frame, loweringoperation. The cable may be comshowing the position of the partsconnected posed of cord, rope, chain, metal strap, or any 8 to the lowersash when the latter is down. suitable well-known flexible device toconnect The reference-letter a denotes an ordinary the weights with thesashes, and I have therewindow-frame provided with upper andlower foreused this term merely for convenience. sashes b and a, movablevertically therein. Having thus described the preferred con- 40 Theopposite sides of the frame are provided struction of my invention, Iwill now proceed 90 with the usual chambers 01, in which the sashto setforth the manner in which it operates. weights operate. As each of thetwo sashes When it is desired to lower the upper sash 1), shown areprovided with independent devices the crank-handle 9 should be turnedfrom for operating them a description of the mechleft to right, therebyrevolving the drum 6 in 5 anism for one of the sashes will suffice forthe same direction, winding the right-hand 5 both. The upper sash b isactuated by a strandand unwinding the left-hand strand of Windlassmechanism located in the chamber the cable h, so that the right-handstrand d at the right-hand side of the frame. This moves downwardly andthe left-hand strand mechanism consists of a drum or spool e, 10- movesupwardly, thus lifting the weight j up cated a slight distance above thewindow-sill, until the sash rests upon the sill. A contrary 10srevolution of the drum will cause a contrary movement of the cable,thereby lowering the large weightj and raising the sash b. In thislatter movement of the drum the weight is drawn down positively by thatportion of the cable which lies between it and the drum, so that a sureand certain movement is effected whether the weight be too heavy or toolight. Hence it will be seen that a positive draft is brought 011 thesash in the lifting operation in addition to that produced by thegravity of the weight. In the upward movement of the weight the upperstrand of the cable lying between the weight and the pulley above drawson the weight, lifting it entirely free from the sash, so that thelatter moves down with much greater and certain action.

It is evident that my invention can be varied in many slight ways whichmight suggest themselves to a skilled mechanic without departing fromthe scope and spirit of the device. Therefore I do not limit myself tothe exact construction herein shown and de-- scribed, but considermyself entitled to all such variations.

That I claim as new, and desire to secure by Letters Patent, is-

The combination with a window frame and sash, of a weight andweight-cord connected with the sash and running over a sheave 'n, andendless cord connected with the weightcord and passed over sheave 7: anddrum, and means connected with the inner end of the drum for rotating itpositively in either direction whereby the weight-cord may be raised orlowered with the attached sash to any predetermined elevation withoutthe necessity of touching the window-sash.

In witness whereof I aflix my signature in presence of two witnesses.

JAMES I'IOIVARD DICKERSON.

\Vitnesses:

R. G. DU 1301s, B. S. Mo'rLnY.

